Analysis of electric field distribution of cable insulation defects

A defective single-core power cable model of city network was established based on Ansoft/Maxwell in this paper. Then we simulated the electric-field of the operation of the cable during the normal and other defective circumstances such as with the air gap or water gap in the insulating layer, or th...

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Published inJournal of physics. Conference series Vol. 1087; no. 4; pp. 42040 - 42044
Main Authors Liu, Jiaguo, Xin, Xin, Gao, Yunxing, Yu, Xinlong, Li, Zebing, Liu, Yunliang, Wang, Jing, Zhang, Zhanlong
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.09.2018
Subjects
Air gaps
Defects
Electric fields
Insulation
Leakage current
Physics
Power cables
Shielding
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Summary:A defective single-core power cable model of city network was established based on Ansoft/Maxwell in this paper. Then we simulated the electric-field of the operation of the cable during the normal and other defective circumstances such as with the air gap or water gap in the insulating layer, or the steel nail ligation in the power cable. By simulation, it is found that the existence of defects will cause the distortion of the surrounding electric field, and the distorted electric field will produce high frequency pulse current in the copper shielding layer, which provides a feasibility proof for diagnosing the cable insulation defects by measuring the leakage current.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1087/4/042040